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The Effect of Temporary Cement Cleaning Methods on the Retentive Strength of Cementation Type Implant Prostheses

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½ÅȲ±Ô ( Shin Hwang-Kyu ) - ´Ü±¹´ëÇб³ Ä¡°ú´ëÇÐ Ä¡°úº¸Ã¶Çб³½Ç
¼Û¿µ±Õ ( Song Young-Gyun ) - ´Ü±¹´ëÇб³ Ä¡°ú´ëÇÐ Ä¡°úº¸Ã¶Çб³½Ç
½Å¼ö¿¬ ( Shin Soo-Yeon ) - ´Ü±¹´ëÇб³ Ä¡°ú´ëÇÐ Ä¡°úº¸Ã¶Çб³½Ç

Abstract

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The remnant of temporary cement on the intaglio surface of cast restoration may have a negative effect on the retentive strength of permanent cement. This study was to evaluate the effect of temporary cement cleaning methods on the retentive strength of cementation type implant prostheses. Prefabricated implant abutments - height 5.5mm, diameter 4.5mm, 6 degree axial wall taper with chamfer margins were used. Forty copings-abutment specimens were divided into four groups(each n=10) according to the cleaning methods for temporary cement(Temp-) as follows : no temporary cementation(the control group), orange solvent, ultrasonic cleaning, air borne-particle abrasion. After the application of temporary cement and the separation, the cleaning procedure was performed according to the protocol of each group. The specimens were cemented with Implant . After the permanent cementation, the specimens were subjected to thermocycling and pulled out from the specimens with a universal testing machine at a cross-head speed of 0.5mm/min. After the retentive strength test, all the specimens were cleaned using ultrasonic cleaning, abraded with air borne-particles, and steam-cleaned. Likewise, the specimens were temporarily cemented(Temp- NE), cleaned according to the protocol of each group, cemented with Implant and subjected to thermocycling and measurement of their retentive strength. The mean of group with orange solvent were significantly lower than those of other groups(p<0.05). There was no significance between group with ultrasonic cleaning and group with air borne-particle abrasion. Group with ultrasonic cleaning and group with air-particle abrasion were no significance at control group. There was no significance between group cemented with Temp- and group cemented with Temp- NE. Within the limitation of this study, it can be concluded that the temporary cement cleaning method with only orange solvent may have a negative effect on the retentive strength of permanent cement. Ultrasonic cleaning and air borne-particle abrasion methods are recommended for the temporary cement cleaning method on cementation type implant prostheses.

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½Ã¸àÆ® À¯ÁöÇü ÀÓÇöõÆ®;À¯Áö³î;À¯Áö·Â;Àӽà ½Ã¸àÆ® Á¦°Å¹æ¹ý;ÀÓÇöõÆ® Àü¿ë ½Ã¸àÆ®
cementation type implant prostheses;eugenol;Premier Implant Cement;retentive strength;temporary cement cleaning method

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